If this is not done, trying to select another window with the mouse when
the treeselect window is up, the X server executes a pointer/keyboard
grab until `allowEvents' is called; which it never is and so both remain
frozen indefinitely.
C.f.:
- xmonad/xmonad/issues/116
- xmonad/xmonad-contrib/issues/445
Starting with 5240116f3cdf169e3aa226d9f8206a5f5b99c867 we only support
GHC versions 8.4.4 and up (more precisely, the GHC version associated
with stackage lts-12 and up). The imports in question are now in
Prelude and need not be imported explicitly.
To enable this feature add `workspaceHisotryHook` from
`XMonad.Hooks.WorkspaceHistory` to your logHook.
Your previously-visited workspaces can be navigated with
the 'moveHistBack' and 'moveHistForward' actions (which are bound to the 'o' and 'i' keys)
TreeSelect displays your workspaces or actions in a Tree-like format.
You can select the desired workspace/action with the cursor or hjkl keys.
This module is fully configurable and very useful if you like to have a
lot of workspaces.
Please see the Documentation provided by 'XMonad.Actions.TreeSelect'.
